Measurement of the resonance capture cross section of Pb and termination of the -process

の共鳴捕獲断面積測定と過程の終点

Domingo-Pardo, C.*; O'Brien, S.*; Abbondanno, U.*; Aerts, G.*; lvarez, H.*; Alvarez-Velarde, F.*; Andriamonje, S.*; Andrzejewski, J.*; Assimakopoulos, P.*; Audouin, L.*; Badurek, G.*; Baumann, P.*; Becvr, F.*; Berthoumieux, E.*; Calvio, F.*; Cano-Ott, D.*; Capote, D.*; Carrillo de Albornoz, A.*; Cennini, P.*; Chepel, V.*; Chiaveri, E.*; Colonna, N.*; Cortes, G.*; Couture, A.*; Cox, J.*; Dahlfors, M.*; David, S.*; Dillmann, I.*; Dolfini, R.*; Dridi, W.*; Durn, I.*; Eleftheriadis, C.*; Embid-Segura, M.*; Ferrant, L.*; Ferrari, A.*; Ferreira-Marques, R.*; Fitzpatrick, L.*; Frais-Koelbl, H.*; 藤井 香織*; Furman, W.*; Guerrero, C.*; Goncalves, I.*; Gallino, R.*; Gonzalez-Romero, E.*; Goverdovski, A.*; Gramegna, F.*; Griesmayer, E.*; Gunsing, F.*; Haas, B.*; Haight, R.*; Heil, M.*; Herrera-Martinez, A.*; 井頭 政之*; Isaev, S.*; Jericha, E.*; Kadi, Y.*; Kppeler, F.*; Karamanis, D.*; Karadimos, D.*; Kerveno, M.*; Ketlerov, V.*; Koehler, P.*; Konovalov, V.*; Kossionides, E.*; Krtika, M.*; Lamboudis, C.*; Leeb, H.*; Lindote, A.*; Lopes, I.*; Lozano, M.*; Lukic, S.*; Marganiec, J.*; Marques, L.*; Marrone, S.*; Mastinu, P.*; Mengoni, A.*; Milazzo, P. M.*; Moreau, C.*; Mosconi, M.*; Neves, F.*; Oberhummer, H.*; 大島 真澄; Pancin, J.*; Papachristodoulou, C.*; Papadopoulos, C.*; Paradela, C.*; Patronis, N.*; Pavlik, A.*; Pavlopoulos, P.*; Perrot, L.*; Plag, R.*; Plompen, A.*; Plukis, A.*; Poch, A.*; Pretel, C.*; Quesada, J.*; Rauscher, T.*; Reifarth, R.*; Rosetti, M.*; Rubbia, C.*; Rudolf, G.*; Rullhusen, P.*; Salgado, J.*; Sarchiapone, L.*; Savvidis, I.*; Stephan, C.*; Tagliente, G.*; Tain, J. L.*; Tassan-Got, L.*; Tavora, L.*; Terlizzi, R.*; Vannini, G.*; Vaz, P.*; Ventura, A.*; Villamarin, D.*; Vincente, M. C.*; Vlachoudis, V.*; Vlastou, R.*; Voss, F.*; Walter, S.*; Wendler, H.*; Wiescher, M.*; Wisshak, K.*

Domingo-Pardo, C.*; O'Brien, S.*; Abbondanno, U.*; Aerts, G.*; lvarez, H.*; Alvarez-Velarde, F.*; Andriamonje, S.*; Andrzejewski, J.*; Assimakopoulos, P.*; Audouin, L.*; Badurek, G.*; Baumann, P.*; Becvr, F.*; Berthoumieux, E.*; Calvio, F.*; Cano-Ott, D.*; Capote, D.*; Carrillo de Albornoz, A.*; Cennini, P.*; Chepel, V.*; Chiaveri, E.*; Colonna, N.*; Cortes, G.*; Couture, A.*; Cox, J.*; Dahlfors, M.*; David, S.*; Dillmann, I.*; Dolfini, R.*; Dridi, W.*; Durn, I.*; Eleftheriadis, C.*; Embid-Segura, M.*; Ferrant, L.*; Ferrari, A.*; Ferreira-Marques, R.*; Fitzpatrick, L.*; Frais-Koelbl, H.*; Fujii, Kaori*; Furman, W.*; Guerrero, C.*; Goncalves, I.*; Gallino, R.*; Gonzalez-Romero, E.*; Goverdovski, A.*; Gramegna, F.*; Griesmayer, E.*; Gunsing, F.*; Haas, B.*; Haight, R.*; Heil, M.*; Herrera-Martinez, A.*; Igashira, Masayuki*; Isaev, S.*; Jericha, E.*; Kadi, Y.*; Kppeler, F.*; Karamanis, D.*; Karadimos, D.*; Kerveno, M.*; Ketlerov, V.*; Koehler, P.*; Konovalov, V.*; Kossionides, E.*; Krtika, M.*; Lamboudis, C.*; Leeb, H.*; Lindote, A.*; Lopes, I.*; Lozano, M.*; Lukic, S.*; Marganiec, J.*; Marques, L.*; Marrone, S.*; Mastinu, P.*; Mengoni, A.*; Milazzo, P. M.*; Moreau, C.*; Mosconi, M.*; Neves, F.*; Oberhummer, H.*; Oshima, Masumi; Pancin, J.*; Papachristodoulou, C.*; Papadopoulos, C.*; Paradela, C.*; Patronis, N.*; Pavlik, A.*; Pavlopoulos, P.*; Perrot, L.*; Plag, R.*; Plompen, A.*; Plukis, A.*; Poch, A.*; Pretel, C.*; Quesada, J.*; Rauscher, T.*; Reifarth, R.*; Rosetti, M.*; Rubbia, C.*; Rudolf, G.*; Rullhusen, P.*; Salgado, J.*; Sarchiapone, L.*; Savvidis, I.*; Stephan, C.*; Tagliente, G.*; Tain, J. L.*; Tassan-Got, L.*; Tavora, L.*; Terlizzi, R.*; Vannini, G.*; Vaz, P.*; Ventura, A.*; Villamarin, D.*; Vincente, M. C.*; Vlachoudis, V.*; Vlastou, R.*; Voss, F.*; Walter, S.*; Wendler, H.*; Wiescher, M.*; Wisshak, K.*

CERN n_TOF施設においてPbとPbの中性子捕獲断面積を中性子飛行時間法により測定した。Pbでは 2.5keV以下において初めて2つの強い-wave共鳴を見いだした。Pbでは、以前の2つの測定には報告されていなかった多くの(97個)の共鳴を明らかにした。宇宙における鉛アイソトープの元素合成に関する新たな知見が得られた。

The neutron capture cross sections of Pb and Pb have been measured at the CERN n_TOF installation using the time of flight method with the pulse height weighting technique. In a preliminary analysis of Pb we have determined by first time the capture cross sections for two strong -wave resonances below 2.5 keV. In Pb we have determined capture cross sections for a large number of resonances, which were not reported in the two previous capture measurements. We discuss preliminary implications of the new cross sections in the stellar nucleosynthesis of the Pb isotopes.